Demodulator for CDMA spread spectrum communication using multipl

Details Demodulator for CDMA spread spectrum communication using multipl Demodulator for CDMA spread spectrum communication using multipl

1997-02-19

1998-09-22

Safourek, Benedict V.

Multiplex communications

Communication over free space

Combining or distributing information via code word channels...

370203, 370479, 375200, 375205, 375206, 375207, 329308, 36472411, H04J 1304

Patent

active

058125469

ABSTRACT:
The demodulator has a plurality of matched filters in parallel. Each matched filter has a different binary PN code, a plurality of sample holders, a plurality of multipliers, an adder, and a controller. The sample holders has a common input, a switch, a first capacitor, a first inverse amplifier with an output and an input connected to the common input through the switch and the capacitor, and a first feedback capacitor for feeding the output of the first inverse amplifier back to the input. Each multiplier has a first and second sub-multiplexers, one of sub-multiplexer selecting corresponding sample holder output and another sub-multiplexer selecting a reference voltage.

REFERENCES:
patent: 5031191 (1991-07-01), Hiramatsu et al.
patent: 5555286 (1996-09-01), Fattouche et al.
patent: 5668806 (1997-09-01), Arai et al.
Andrew J. Viterbi, "CDMA Principles of Spread Spectrum Commmunication", Copyright 1995.
Jinkang Zhu, Shigenobu Sasaki and Gen Marubayashi, "Proposal of Parallel Combinatory Spread Spectrum Communication System", The Institute of Electronics, Information and Communication Engineers, B-II vol. J74-B-II No. 5, May 1991, pp. 207-214.
"Synchronization method using quadrature modulation and demodulation for parallel combinatory SS communications", The Institute of Electronics, Information and Communication Engineers.
"An Experimental ISM band SS Wireless LAN System Using Parallel Combinatory Spread Spectrum Communication System", The Institute of Electronics, Information and Communication Engineers, Report of IEICE, SST93-93 (1994-03).

Affiliated with

Also associated with

Rating

Demodulator for CDMA spread spectrum communication using multipl does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Demodulator for CDMA spread spectrum communication using multipl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Demodulator for CDMA spread spectrum communication using multipl will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1630359